/*
 * Copyright 2013-2018 Lilinfeng.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 */
package com.phei.netty.protocol.http.fileServer;

import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.handler.codec.http.HttpObjectAggregator;
import io.netty.handler.codec.http.HttpRequestDecoder;
import io.netty.handler.codec.http.HttpResponseEncoder;
import io.netty.handler.stream.ChunkedWriteHandler;

/**
 * @author lilinfeng
 * @date 2014年2月14日
 * @version 1.0
 */
public class HttpFileServer {

	private static final String DEFAULT_URL = "/src/com/phei/netty/";

	public void run(final int port, final String url) throws Exception {
		EventLoopGroup bossGroup = new NioEventLoopGroup();
		EventLoopGroup workerGroup = new NioEventLoopGroup();
		try {
			ServerBootstrap b = new ServerBootstrap();
			b.group(bossGroup, workerGroup).channel(NioServerSocketChannel.class)
					.childHandler(new ChannelInitializer<SocketChannel>() {
						@Override
						protected void initChannel(SocketChannel ch) throws Exception {
							ch.pipeline().addLast("http-decoder", new HttpRequestDecoder());
							ch.pipeline().addLast("http-aggregator", new HttpObjectAggregator(65536));
							ch.pipeline().addLast("http-encoder", new HttpResponseEncoder());
							ch.pipeline().addLast("http-chunked", new ChunkedWriteHandler());
							ch.pipeline().addLast("fileServerHandler", new HttpFileServerHandler(url));
						}
					});
			ChannelFuture future = b.bind("192.168.1.102", port).sync();
			System.out.println("HTTP文件目录服务器启动，网址是 : " + "http://192.168.1.102:" + port + url);
			future.channel().closeFuture().sync();
		} finally {
			bossGroup.shutdownGracefully();
			workerGroup.shutdownGracefully();
		}
	}

	public static void main(String[] args) throws Exception {
		int port = 8080;
		if (args.length > 0) {
			try {
				port = Integer.parseInt(args[0]);
			} catch (NumberFormatException e) {
				e.printStackTrace();
			}
		}
		String url = DEFAULT_URL;
		if (args.length > 1)
			url = args[1];
		new HttpFileServer().run(port, url);
	}
}
